A current if flowing east along a power line. If the earth's field is neglecteda the direction of the magnetic field below it is
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The electric flux density is a ________ quantity.
The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
Hysteresis loss can be reduced by one of the following.
Hysteresis is a phenomenon of _________ in a magnetic circuit.
Used to maintain strength of magnetic field
Permanent magnets can be found in
Which of the following is used by permanent magnets as the magnetic material?
What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
The customary energy unit in atomic and nuclear physics is
Flux density is measured in
The physical motion resulting from the forces of magnetic fields is called
A 200-watt lamp working for 24 hours will consume approximately _____ units.
The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
Permeance is analogous to
What principle states that each electron in an atom must have a different set of quantum numbers?
If the distance between two magnetic poles decreases by 2 timesa the force between them
Which of the following materials has permeability slightly less than that of free space?
Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
The magnetic materials should have a large hysteresis loss for one of the following applications.
Which of the following is a natural magnet?
Refers to the magnetic lines
The permittivity of a material is given by one of the following formulas.
One ampere- turn is equivalent to _____ gilberts
The core of a magnetic equipment uses a magnetic material with
A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
The branch of Engineering which deals with the magnetic effect of electric current is known as
What is the main advantage of temporary magnets?
Electronic current in a wire is the flow of ____________ electrons.
The permeability of permalloy is
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